Steam-turbine and governor



C. W. DAKE.

STEAM TURBiNE AND GOVERNOR.

APPLICATION FILED MAY 2|, 1920,

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ST EAM TURBINE AND GOVERNOR.

APPLICATION FILED MAY 21. I920.

Patented Nov. 15, 1921 3 SHEETSSHEET 2.

flttorng' C. W. BAKE.

STEAM TURBINE AND GOVERNOR.

APPLICATION FILED MAY 21. 1920.

1,397,086. Patented Nov. 15, 1921.

' ETSSHEET 3.

3 SHE UNITED STATES PATENT OFFICE CHARLES W. DAKE, CHICAGO, ILLINOIS, ASSIGNOR TO THE PYLE-NATIONAL COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

STEAM-TURBINE AND GOVERNOR.

Original application filed August 20, 1919, Serial No. 318,651.

'T 0 all whom it may concern:

Be it known that I, CHARLES 1V. DAKE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Steam-Turbines and Governors, of which the following is a specification, said application being a division of my application filed August 20, 1919, Serial Number 318,651.

My invention relates to improvements in steam turbines and is a divisional application embodying the subject matter divided out of patent application Serial Number 318,651, filed August 20, 1919.

One object of my invention is to provide a new and improved form of steam turbine which will be light, self-contained, fool proof and easy to manufacture. Another object is to provide a turbine which will have a high economy and efficiency. Another object is to provide a turbine which will require a minimum of adjustment, change and reconstruction in operation. Other objects will appear from time to time in the specification.

My invention is illustrated more or less diagrammatically in the accompanying drawings wherein:

Figure 1 is a section in a horizontal plane with parts broken away;

Fig. 2 is a section along the line 2 2 of Fig. 1;

Fig. 3 is a section along the line 3 3 of Fig. 1;

Fig. 41 is a sectional view of the rotor;

Fig. 5 is an enlarged view of the governor weight;

Fig. 6 is a view of the buckets.

Like parts are indicated by like characters throughout the drawings.

A is a cylindrical motor generator housing having cast integral therewith a fiat supporting base, A This cylindrical housing is open at both ends and contains intermediate its ends a web A having a central annular opening A A is a steam chamber within the web A provided with a steam inlet passage A and communicating with a nozzle A. This nozzle A is placed in a tube A which is introduced together with the nozzle in a bore in the web. The tube and nozzle are introduced through an opening in the cylinder which is closed by the Patented Nov. 15, 1921.

plug A A is the nozzle block in which the nozzle opening proper is formed.

B is an annular exhaust chamber about the periphery of the housing, bounded on one side by the web A and on the other side by the rib B which partially closes it. The exhaust chamber is enlarged at B and communicates with the exhaust pipe B and a drain pipe B B is a removable turbine wall positioned upon the rib B Itis parallel with the web A and with it unites to make the turbine housing proper within which the turbine wheel is located. This turbine wall has a plurality of outwardly projecting arms B which are engaged by the bearing housing support B This bearing housing support is held seated against the rib B by the screw threaded turbine end closure B. This bearing support is rigidly seated on the rib and the same is true of the turbine end wall. This is possible because the elasticity of the turbine end wall itself makes it safe to seat both snugly and firmly on their seats and any distortion caused by temperature changes will be taken care of by elasticity of the turbine wall.

Since the bearing assemblies at either end of the apparatus are identical a description of one will suflice for both. The bearing assembly is mounted on the support 13*, which is flanged and provided with spaced webs Gr supporting a cylindrical member G The flange is cut away as at G so that no matter where it is placed it may come into register with the passage G3 which is supplied with oil by a passage G from the oil well G thus it makes no diiference in what position the bearing support is placed since lubrication is always assured. G is a sleeve projecting inwardly from the plate G it is flanged as at G and carries the bearing G held in position therein by a spring ring G.

D is a solid stub shaft having a reduced end D supported in the ball bearing G". D is a sleeve on such reduced end adapted in cooperation with a nut D to hold the bearings and stub end shaft in proper operative position. D is an oiling plate fixed on the shaft and having its lower edge immersed in the lubricating oil. D is a hollow sleeve rigidly attached to the stub end shaft and extending fromit toward the other end of the apparatus. It terminates just short Divided and this application filed. May 21, Serial No. 383,134.

t which is resisted by the governor spring.

of a similar bearing G at the generator end and is closed by hollow plug D which plug is reduced to engage such bearing G so that we have a rigid shaft fixed in position and held against longitudinal movement comprising a solid stub end shaft a sleeve and a hollow plug, the outside diameter of the sleeve and the stub being the same so as to give in effect a smooth and continuous outer shaft surface. The sleeve D is slotted at D and contains a plug D having pins D extending through longitudinal slots D". Thls plug engages at one end a coiled spring D located within the hollow portion of the shaft. The other end of this spring is anchored on a plug D which is slidable within the shaft and may be adjusted in position by the screw D which extends out through the hollow plug D"- so that a screw driver engaging the slotted head of the screw 1) can change the tension on the sprlng D and this tension is the tension which controls and regulates the governor as will hereafter be described. 7

E is a sleeve slidably mounted on the shaft, it is engaged by the pins D so that the spring D may control the sleeve and provide aoyielding resistance to the longitudinal movement thereof and at the same time the pins themselves hold the sleeve against rotation with respect to the shaft. At either end of the sleeve are collars E closing the oil chamber and having flared oiled discharging ends so arranged as to discharge any oil' which leaks toward the electrical or steam portion of the apparatus away from the bearings back into the bearing chambers. E is a rotor disk. It carries the bucket wheel rim E upon which are the buckets E -joined together by the shroud E E is a ring adapted to reinforce. the bucket rim and assist in positioning the partsas hereafter explained, E are a series of bent governor weights having outwardly extending knife edges which engage the ring E at its engagement with the plate E spacingblocks E hold these governor weights in position. They extend inwardly down through the sleeve E and engage pockets E in the solid portion of the shaft. Their shape is such that when centrifugal force is exerted by them as the rotor turns they tend to rotate outwardly about their knife edges, and the result is that the central sleeve, the electrical rotor and the turbine are all moved to the left, because since the pivotpoint cannot move without moving the whole apparatus and since the base point is fixed on the main shaft that is the only movement that is possible. This. movement is the movement E is a' driving pin. It extends clear through the shaft and is anchored at either end on the turbinev rotor. The ring E is slotted at E to permit this pin to move with respect to the turbine so that the pin is able to take the driving load out at the periphery of the turbine leaving all the other parts free to give as the governor con trols and moves them. This movement of the turbine to one side, of course, tends to bring the bucket and steam nozzle more or less out of register, and it is this movement that causes the turbine itself to serve as a valve, the shroud moving over and covering the nozzle and decreasing the steam supply, to control and regulate the speed.

It will be evident that while I have shown in my drawings an operative device, still many changes might be made both in size, shape, and arrangement of parts without departing materially from the spirit of my invention, and I wish therefore that my drawingsbe regarded as in a sense diagrammatic.

The use and operation of my invention are as follows:

Oil is poured into the oil pocket until the oil reaches such a level that the conveying disks at either end are immersed for an inch or so at the bottom. Theapparatus is then sent out and set up on a locomotive, the steam and exhaust lines being connected up in the usual manner. As soon as the steam is turned on the'buckets are engaged by the moving column of steam andthe turbine is rotated. The steam continues to rotate the turbine until a predetermined speed is reached when the centrifugal force of the governor weight tends to move the outer shell or sleeve including the turbine and the electrical rotor longitudinally against the yielding resistance of the governor spring. This movement brings the shroud more or less into register with the steam nozzle and cuts off or controls the flow of steam. As the speed drops down the centrifugal force of the governor weights decreases and the governor spring tends to move the buckets back into line with the nozzle. Thus governing takes place in the usual manner.

In the form of structure which I have here shown, my turbine wheel takes -the form of a hollow box like cylinder in which the governor weights are mounted and thus these parts are not only compactly arranged but they can be thoroughly lubricated. I have also in this structure shown the other parts of the governor as arranged within a hollow shaft which in like manner results in a compact arrangement of the parts and an easy method of lubrication. Both of these arrangements are included in the one structure here shown but either set of parts could be arranged otherwise and yet associated with a set of parts arranged as here shown. This arrangement of theparts also eliminates all windage or friction caused by the motion of the governor parts in a surrounding medium. The governor weight holding the cylinder and the shaft, constitutes inclosed chambers so that the parts within them, together with the media which they contain, are rotated together. This cylinder and hollow shaft are also during operation, more or less filled with lubricant.

The governor may be conveniently divided for the purpose of consideration hereinafter, into two parts, governor weights part and the tension part. The governor weights are acted upon by the centrifugal force and the tension part is that portion of the governor device which opposes the action of the governor weights.

The nozzle is brought to within live 0 -e thousandths of an inch of the surface of the wheel into which it is discharging so that in effect when the wheel is shifted, it reduces the effective opening of the nozzle and actually tends to shut off the-steam without any appreciable leakage. Thus the method of governing here illustrated, is free from objectionable waste of steam.

The wheel preferably has widely extended surfaces on the sides of the bucket and the nozzle is placed in opposition to the bucket openings and such surfaces, so that when the wheel is shifted, the cutting ofi or reducing of the effective opening of the nozzle is brought about.

The lubricant which is thrown up by the oil disk,gathers on the top of the interior surface of the end of the casing and is deflected over onto the upper outer wall of the inner oil chamber proper, flows down the surface of the same into the ball bearing, works its way into and thence out of the inner oil chamber so as to maintain to a certain extent, a'certain amount of oil through the ball bearing.

The turbine wheel is connected with the shaft by means of a transverse pin which passes through the shaft to the outer periphery of the inner face of the wheel and here the two ends are received into slots formed within the wheel so that as the wheel rotates, it carries the shaft by means of engagement with the pin and the slots permit the wheel to slide. rota-tably with the shaft. This motion develops friction between the pin and that portion of the wheel with which it engages and to reduce this friction to a minimum, this pin or its two extremities are extended as far as possible outwardly from the shaft. In other words, the driving connection between the wheel and the shaft is made as far as possible from the axis of the shaft.

The, lubricant inserted in the exterior caeing is carried'by theconveying disk upward and otherwise distributed so that it flows into the bearings and finds its way between the sleeve and a central cylindrical shaft until it supplies lubricant'to the chamber within the shaft which contains the tension device. It may pass also between the shaft and the sleeve into the governor weight chamber. The connection is substantially the same with reference toeach end of the machine. Thus the bearing and sliding parts are lubricated and the governor parts and the two governor chambers are lubricated. The generator chamber is, however, not thus exposed directly to the oil and this chamber is relatively free from oil.

I claim:

1. In a governor two members mounted for rotation together and slidable one on the other, governor weights comprising bent bars engaging one member at one end and the other member at the other, and engag ing said members in different parallel planes perpendicular to the axis of rotation, the weights tending to move such members with respect to one another laterally as the weights tend to position themselves under centrifugal force in a plane perpendicular to the axis.

2. A governor comprising a rotary housing, a shaft upon which it is slidably mounted, governor weights loosely positioned within the housing engaging the shaft at one end and housing at the other, and inclined to a plane perpendicular to the axis of rotation.

' 8. A steam turbine comprising agovenior, a box-like cylindrical turbine wheel, governor weights contained therein, and a hollow shaft containing all the remaining parts of the governor.

4:. A steam turbine comprising'a box-like cylindrical turbine wheel, a hollow shaft,

and governor parts and governor adjusting means which are entirely inclosed within the cylinder and shaft.

5. A steam turbine comprising a turbine wheel, a shaft and a governor, all the gov ernor parts and governor adjusting means being entirely inclosed within the wheel and shaft.

6. A steam turbine comprising a turbine wheel, a shaft and a governor, all the governor parts being entirely inclosed within the wheel and shaft, means for adjusting the governor without the exposure of'any the governor parts.

7. A steam turbine comprising a turbine wheel, a shaft and a governor, all the governor parts being entirely inclosed within the wheel and the shaft, the governor having a spring and means for adjusting the tension thereon without exposing any of the governor parts.

8'. A steam turbine comprising a turbine wheel, a shaft and a governor, all the governor parts being entirely inclosed within the wheel and shaft, the governor having a spring located within the shaft and means sprm / ernor parts being entirely. inclosed within the wheel and shaft, means for adjusting the governor without the exposure of any of the governor parts, said means comprising a socket extending longitudinallv through the shaft and terminating at the end thereof.

10. A steam turbine comprising a turbine wheel, a shaft and a governor, all the gov ernor parts being entirely inclosed within the wheel and shaft, the governor having a spring and means for. adjusting the tension thereon without exposing any 1 of the governor parts, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof.

11. A steam turbine comprising a turbine wheel, a shaft and a governor, all the governor parts being entirely inclosed within the wheel and shaft, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof.

12. A steam turbine comprising a turbine wheel, a shaft and a governor, the governor veights entirely inclosed in the wheel and the remaining governor parts entirely inclosed in the shaft, and means for adjusting the governor and without the exposure of any of the governor parts.

13. A steam turbine comprising a turbine wheel, and a hollow shaft which passes therethrough, and a governor, the governor parts inclosed entirely within the wheel and shaft, the adjusting parts of the governor being located in the shaft.

14. A steam turbine comprising a turbine. vlieel, and a hollow shaft which passes therethrough, and a governor, the governor parts inclosed entirely within the wheel and shaft, and means for adjusting the governor without exposing any of its parts.

7 15. A steam turbine comprising a turbine wheel, and a hollow shaft which passes therethrough, and a governor, the governor parts inclosed entirely within the wheel and shaft, the interior and exterior of the wheel and the hollow shafts so connected that lubricant may pass from one tothe other.

16. A steam turbine comprising a turbine wheel and a shaft, and a governor, the governor weights inclosed within the wheel and fulcrumed on the shaft andthe remaining governor parts inclosed withinthe shaft.

17. In a steam turbine, a governor comprising governor weights and a tension device, the latter suspended so that its 1nov-' 9. steam turbine comprising a turbine wheel, a shaft and a governor, all the gov-v ing part'has no frictional'engagement with any other part.

18. A steam turbine comprising aturbine wheel and a hollow shaft, and governor weights inclosed in the turbine wheel, and

the tensiondevice of the governor inclosed 1n the shaft and free from fr ctional contact with other parts.

19.-A governor comprising govern-or weight parts, tension devices and a ihollow shaft which-incloses such tension devices, the latter arranged on the axis of the shaft.

20. A governor comprising governor weight parts, tension devices and a hollow shaft which incloses suchtension devices, the latter arranged on the axis of the shaft and out of frictional-contact with the other parts.

21. shaft, a. hollow drum like rotor mounted thereon having a smooth cylindrical surface,

a cylindrical flange projecting laterally from one of the surfaces of the drum and in-line with the periphery thereof and tur bine buckets disposed 'within the flange whereby the motive fluid passes radially through said flange. p

22. A steam turbine comprising a smooth shaft, a drum shaped rotor mounted thereon having a smooth cylindrical surface, a cylindrical flange projecting laterally from one of the surfaces of the drum and in line with the periphery thereof and turbine buckets disposed within the flange whereby the motive fluid passes radially through said flange, a sleeve on the shaft carrying the drum and mounted to shde w th the drum along the shaft but held against ro- 'tational novement with respect thereto.-

23. A steam turbine comprising a turbine wheel, a shaft and a governor, the governor being adapted to move the wheel laterally to control thesteam flow, and all the governor parts being entirely inclosed within the wheel and shaft.

24'. A steamturbine comprising a turbine wheel, a shaft and a governor, the governor being adapted to move the wheel laterally to control the steam flow, and all the governor nor parts being entirely inclosed within the wheel and shaft, i the governor i having a spring and means for adjusting the tension thereon without exposing anyofthe gover nor parts.

26. A steam turbine comprising a turbine wheel, a shaftand a governor, the governor- A steam turbine comprisinga smooth being adapted to move the wheel laterally to control the steam How, and all the overnor parts being entirely inclosed within the wheel and shaft, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring. r v 27. A steam turbine comprising a turbine wheel, a shaft and a governor, the governor being adapted to move the wheel laterally to control the steam flow, and all the governor parts being entirely inclosed within the wheel and shaft, means for adjusting the governor without the exposure of any of the governor parts, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof.

28. A steam turbine comprising a turbine wheel, a shaft and a governor, the governor being adapted to move the wheel laterally to control the steam flow, and all the governor parts being entirely inclose-d within the wheel and shaft, the governor having a spring and means for adjusting the tension thereon without exposing any of. the governor parts, said means comprising a socket extending longitudinally through the shaft and terminating at the'end thereof.

29. A steam turbine comprising a turbine wheel, a shaft and a governor, the governor being adapted to move the wheel laterally to control the steam flow, and all the governor parts being entirely'inclosed within the wheel and shaft, the governor having a spring located within the shaft and means accessible through the end of-the shaft for adjusting the tension on 1 the governor spring, said meanscomprising a socket extending longitudinally through the shaft and terminating at the end thereof.

30. A steam turbine comprising a turbine wheel, governor weights entirely inclosed therein, a shaft and a governor spring entirely inclosed therein.

'31. A steam turbine comprising a turbine wheel, governor weights entirely incloscd therein, a shaft and a governor spring entirely inclosed therein, means for adjusting the governor without the exposure of any ,of the governor parts.

32. A steam turbine comprising a turbine wheel, governor weights entirely. inclosed therein, a shaft and a governor spring entirely inclosed therein, the governor having a spring and means for adjusting the tension thereon without exposing any of the g ovenor parts. 1

33. A steam turbine comprising a turbine wheel, governor wei hts entirely inclosec therein, a shaft and a governor spring entirely inclosed therein, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring.

A steam turbine comprising a turbine wheel, governor weights entirely inclosed therein, a shaft and a governor spring entirely inclosed therein, means for adjusting the governor without the exposure of any of the governor parts, said means compris- 1ng a socket extending longitudinally through the shaft and terminating at the end thereof.

35. A steam turbine comprising a turbine wheel, governor weights entirely inclosed therein, a shaft and a governor spring entirely inclosed therein, the governor having a spring and means for adjusting the tension thereon without exposing any of the gov ernor parts, said means comprising a soeket extending longitudinally through the shaft and terminating at the end thereof.

36. A steam turbine comprising turbine wheel, governor weights entirely inclosed therein, a shaft and a governor saring entirely inclosed therein, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring, said meanscomprising a socket extending longitudinally through the shaft and terminating at the end thereof.

37. A steam turbine comprising a shaft, a sleeve inclosing it and a turbine wheel mounted on the sleeve, a governor entirely inclosed within the wheel and shaft, and adapted to move the sleeve slidablv on. the shaft.

88. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidablv on the shaft but held against rotation with respect thereto, a turbine wheel mounted rigicly on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine,

39. A steam turbine comprising a shaft mounted for'rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted rigidly on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, me as for adjusting the governor without the exposure of any of the governor parts.

40. A steam turbine comprising a shaft mounted for rotation and h ld against longitudinal movement, a sleev mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted rigidly on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine. the shaft provided at one end with means whereby to compensate for unequal expansion and contraction of the shaft and surrounding parts. 7 v j V r 41. A .steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted rigidly on the Sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, means for adjusting the'governor without the exposure of any of the governor parts, the shaft provided at one end with means whereby to compensate for unequal expansion and contraction of theshaft and surrounding parts.

. 42. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted rigidly on the sleeve and a governor adapted to move the sleeve and wheel lon gitudinally along the shaft to govern the turbine, the governor having a spring and 1 means for adjusting the. tension thereon without exposing any of the governor parts.

' 43. A steamturbine comprising a shaft mounted for rotation and held against lon'-' gitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine Wheel mount ed rigidly on thesleeve and a governor adapted tomove the sleeve and wheel longitudinally along the shaft to govern the turbine, the governor having a spring located within the shaft "and means the tension on the governor. spring.

44. A steam turbine comprising "a shaftv tending longitudinally through the and terminating at the end thereof. 7 v

45. A'steam turbine comprising a shaft mounted for rotation and held against lon-v gitudinal movement, a sleeve mountedslid ably on the shaft but held against rotation with respect thereto, a turbine Wheel mounted rigidly on the sleeve and a. governor adapted to move the sleeve andwheel longi- V tudinally along the shaft to govern the turbine, the governor having a spring and means for adjusting the tension thereon without exposing any of the governor parts, and means comprising a socket extending accessible through the end of the shaft for adjusting shaft and tudinally along the shaftto; governor-the turbine, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring, said means comprising a soolreteXt-ending longitudinally through the shaft and terminating at theend thereof.

47. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but heldagainst rotation withrespect thereto, a turbine wheel mounted on the sleeve and a governor adapted to move the sleeve and wheellongitudinally along the shaft to govern the "turbine, the governor having a spring and means for adj usting the tension thereon ivith'o-ut' exposing any governor parts, a plug associated with the spring and movable within the shaft,

lugs projecting therefrom through the shaft 1 to en a e the sleeve. V

b b L I I s 48. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted SllClably on the shaft but held against rotation with respect thereto, a turbine wheel mount- .ed on the sleeve and a governor adapted to 'move the sleeve and wheel longitudinally along the shaftto govern the turbine, the

governor'having a spring, a plug associated with the spring, and movable within the shaft,lugs projectin shaft to engage the sleeve.

49. A steam turbine comprising a shaft mounted for rotationand held against longitudinal movement, a sleeve mounted slidably ,on the shaft'but held against rotation with 'respectthereto, a turbine wheel mounted rig-j idly on the sleeve and a governor adapted to i move the sleeve and wheel longitudinally along the shaft to govern the turbine, the l governor having a spring located Within the shaft and ineans aocessible through the end of the shaft "for adjusting thejtension on the governor spring, a plug associated withfthe spring and movable within theshaft,: lugs projecting therefrom through the shaft to engage the sleeve. 1

50. A steam'turbine comprising a shaft mounted forv rotation and held against longitudinal movement,'a sleeve mounted slidably on the shaft but held against rotation withrespect thereto, a turbine wheel -niounted-' rigidly on the sleeve and a governor adapted therefrom through the lie to move the sleeve and'wheel longitudinally along the shaft to govern the turbine, the governor having a spring and means for adjusting the tension thereon without exposing any of the overnor parts, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof, a plug associated with the spring and movable within the'shaft, lugs projecting therefrom through the shaft to engage the sleeve.

51. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a bucket wheel mounted rigidly on the wheel and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof, a sliding plug associated with the spring and slidable within the shaft to engage the sleeve and hold it against rotary movement with respect to the shaft.

52. A steam turbine comprising a shaft, a sleeve inclosing it and a turbine wheel mounted on the sleeve, a governor entirely inclosed within the shaft and wheel, and adapted to move the sleeve slidably on the shaft, governor weights entirely inclosed within the wheel and a connection between the weights and the shaft extending through the sleeve, the weights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage the shaft.

53. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, governor weights entirely inclosed within the wheels and a connection between the weights and the shaft extending through the sleeve, the weights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage the shaft.

54. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, means for adjusting the governor without the exposure of any of the governor parts, governor weights entirely inclosed within the wheels and a connection between the weights and the shaft extending through the sleeve, theweights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage theshaft.

55. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, the governor having a spring and means for adjusting the tension thereon without exposing any of the governor parts, governor weights entirely inclosed within the wheel and a connection between the weights and the shaft extending through the sleeve, the weights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage the shaft.

56. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted on the shaft and a governor adapted to move the sleeve and wheel longitudinally along the shaft to goyern the turbine, the "overnor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring, governor weights entirely inclosed within the wheels and a connection between the weights and the shaft extending through the sleeve, the weights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage the shaft.

57. A steam turbine comprising a shaft mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a. turbine wheel mounted on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, means for adjusting the governor without the exposure of any of the governor parts, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof, governor weights entirely inclosed within the wheels and a connection between the weights and the shaft extending through the sleeve, the weights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage the shaft.

58. A steam turbine comprising a shaft mounted for'rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted onthe sleeve and a governoradapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, the governor having a spring and means for adjusting the tension thereon without exposing any of the governor part-s, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof, governor weights entirely closed within the wheels and a connection between the weights and the shaft extending through the sleeve,the weights being free to rotate with respect to the shaft in a plane containing the shaft but held against longitudinal movement with respect thereto at the point where they engage the shaft.

59. A steam turbine comprising a shaft i mounted for rotation and held against longitudinal movement, a sleeve mounted slidably on the shaft but held against rotation with respect thereto, a turbine wheel mounted on the sleeve and a governor adapted to move the sleeve and wheel longitudinally along the shaft to govern the turbine, the governor having a spring located within the shaft and means accessible through the end of the shaft for adjusting the tension on the governor spring, said means comprising a socket extending longitudinally through the shaft and terminating at the end thereof,

ends and engaging the rotor at their outer ends, the center of gravity of said weights being locatedin a plane axially removed from the plane in which their outer ends are located.

7 61.- In a steam turbine a shaft, a rotor axially movable thereon, and yielding means for resisting its movement, governor weights socketed loosely on the shaft at their inner ends and engaging the rotor at their outer ends, the center of gravity of said weights being located in a plane axially removed 1 from the plane in which their outer ends are located. I

62; A steam turbine comprisingva smooth shaft, a hollow rotor mounted thereon, having a smooth cylindrical surface, a hollow cylindrical flange projecting laterally from one of the surfaces of the drum and in line with the periphery thereof and turbine buckets disposed within the flange whereby the motive fluid passes radially through said flange.

Signed at Chicago, county of (look and State of Illinois, thisl ith day of May, 1920.

CHARLES l/V. DAKE. 

